Intrathecal or intravenous injection of MSC‐CM attenuates motor incoordination in SCA1‐KI mice. Performance on the accelerating rotarod test at 13 weeks of age of naïve mice (n = 10) and mice given intrathecal (IT) (n = 8, each) (A) or intravenous (IV) (n = 5, each) (B) injections of medium (control) or MSC‐CM is shown. The schedule of injections was the same as in Figure 4, A and E. Individual values are plotted; box plots including smallest, lower quartile, median, upper quartile, and largest values are also shown. *P < 0.05; ***P < 0.001. n.s., not significant.